Alert archive / Connecticut / Special Weather Statements in 2021

Special Weather Statement, NWS New York, NY

June 29, 2021

NWS New York, NY issued this special weather statement at Jun 29, 2021, 8:39 PM EDT. It was in force for 36 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 29, 2021, 8:39 PM EDT (00:39 UTC)
Expired
Jun 29, 2021, 9:15 PM EDT
In force
36 min
Issued by
NWS New York, NY

The radar

The Boston radar (KBOX), 96 km from the middle of the area, began a volume at 00:43 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 0.7 hours before the alert went out and 103 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Brookhaven, NY at 00:00Z on 2021-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1090 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 00:00Z on 2021-06-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 62 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1090 J/kg
Mixed-layer CIN
-117 J/kg
Mixed-layer LCL
1271 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
62 m²/s²
0-3 km storm-relative helicity
112 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

414 
WWUS81 KOKX 300039
SPSOKX

Special Weather Statement
National Weather Service New York NY
839 PM EDT Tue Jun 29 2021

CTZ008-300115-
Northern New London-
839 PM EDT Tue Jun 29 2021

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTHWESTERN NEW LONDON
COUNTY...

At 837 PM EDT, radar indicated strong thunderstorms were located
along a line extending from Chaplin to near Glastonbury. Movement was
east at 25 mph.

Winds in excess of 35 mph and pea size hail are possible with these 
storms.

Locations impacted include...
Colchester, Lebanon, Sprague, Bozrah and Franklin. 

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

LAT...LON 4166 7216 4166 7213 4165 7203 4155 7219
      4161 7233 4164 7233 4165 7231 4167 7228
      4167 7227 4169 7227 4170 7225 4171 7224
TIME...MOT...LOC 0037Z 283DEG 21KT 4179 7213 4168 7251 

$$

JM

The office that day

Everything else NWS New York, NY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 30, 6:12 PM EDTSpecial Weather StatementOKXOrange48 min
Jun 30, 7:05 PM EDTSpecial Weather StatementOKXOrange40 min
Jun 30, 7:10 PM EDTSpecial Weather StatementOKXOrange50 min
Jun 30, 7:12 PM EDTSevere Thunderstorm WarningOKXOrange48 min
Jun 30, 7:15 PM EDTSpecial Weather StatementOKXDutchess45 min
Jun 30, 4:14 AM EDTExcessive Heat WarningOKXBergen, Essex, Hudson, Passaic, Union16 hr
Jun 30, 7:52 PM EDTSevere Thunderstorm WarningOKXNaugatuck Valley Planning Region38 min

Nearby

Special Weather Statements in Connecticut, 2021Every special weather statement in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.